🔧 fix: update tauri-plugin-single-instance to v2.2.4

- Resolves null pointer dereference crash on Windows platform
- Fixes issue where app crashes with STATUS_STACK_BUFFER_OVERRUN
- Updates from v2.2.0 to v2.2.4 which includes upstream bugfix
- Improves app stability during startup and reload operations

src-tauri/pake.json

@@ -1,7 +1,7 @@
 {
   "windows": [
     {
-      "url": "https://weread.qq.com",
+      "url": "https://github.com",
       "url_type": "web",
       "hide_title_bar": true,
       "fullscreen": false,